Temporary binder.



W. S. MENDENHALLa TEMPORARY BINDER.

APPLICATION FILED JUNE 12.1905.

PATENTED OCT. 24, 1906.

Q Vihmooua TTNTTED S WALTER S. MENDENHALL, OF CINCINNATI, OHIO, ASSIGNOR TO THE SAMUEL O. TATUM COMPANY, OF CINCINNATI, OHIO, A CORPORA- TION.

TEMPORARY BINDER.

Patented Oct. 2 1, 1905.

Application filed June 12,1905. Serial No 264,877.

To 10. when). it 'III/II/Y/ concern:

Be it known that I, WALTER S. MENDEN- HALL, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Temporary Binders, of which the following is a specification.

My invention relates to an improved mechanism for locking the top cover 01 a temporary binder to the binding-post.

The object of the invention is to provide a very simple and efiicient lock which can be conveniently housed within the compass destined to be occupied by the top binding-strip.

The features of the invention are more fully set forth in the description of the accompanying drawings, forming a part of this specification, in which- Figure l is a central horizontal section of the locking mechanism, showing the parts in released position. Fig. 2 is a similar view to that of Fig. 1, showing the parts in their clamped position. Fig. 3 is a section on line w, Fig. 2, with top and bottom covers. Fig. 4 is a section on line 0, Fig. 2, with a key in position for manipulation. Fig. 5 is a section on line '1: c, Fig. 2. Fig. 6 is a perspective view of one of the clampingplates.

,I have only shown so much of the device as will serve to illustrate its operation.

1 represents the bottom cover of the binder. (See Fig. 3.)

2 represents the binding-post secured to the cover 1.

3 represents the upper binding-strip, to which the top cover 4 is hinged. This top binding-strip 3 consists of a top plate 5 and a bottom plate 6, which together constitute a casing inclosing between them the locking mechanism. (See Fig. 5.) Between the plates 5 and 6 are the clamping-plates 7 8. The plates 5 and 6 are provided with orifices through which pass the binding-posts. The clamping-plates 7 and 8 have orifices 9 10 for the same purpose, which are alined with the orifices in the plates 5 and 6. The orifices 9 and 10, however, are slightly oval, as indicated in Figs. 1, 2, and 6, so as to permit of longitudinal movement of the clamping-plates relative to the binding-posts, whereby the clamping-plates may be locked against the binding-post or released therefrom. Olamping-plates 7 and 8 are provided at their inner ends with the notched arms 11 and 12, respectively, projected from the opposite sides of the said clamping-plates, so as to overlap one another and to lie parallel between the plates 5 and 6. Within the space formed between the ends of the plates upon two sides and the overlapping hooked or notched arms 11 and 12 on the other sides is a swivel 13, journaled rotatively in the plates 5 6. The upper face of said swivel is provided with the keyway 14c. The periphery of the swivel 13 is formed with the shoulders 15 16 facing in opposite directions and arranged upon opposite sides of the swivel. The shoulder 15 is adapted to engage with the hook 17, and the shoulder 16 is adapted to be engaged with the hook 18 of the plates 7 and 8, respectively.

It is obvious that when the swivel is turned in the direction to bring the shoulders into engagement with the hooks the clamping-plates will be drawn toward one another and the binding-post will be released from clamping relation with said plate, as indicated in Fig. 1, at which time the upper cover can be moved on the binding-posts. The opposite sides oi the swivel 13 in a direction longitudinal of the clamping-plates is provided with the cams 19 20. \Vhen the swivel is moved in the direction to release the said shoulders from said hooks,the said peripheral cams will be brought into engagement with the inner ends of the clamping-plate and move them apart, as shown in Fig. 2, thereby bringing the inner edges of the orifices 9 10 into clamping engagement with said clamping-plates and substantially locking the cover to said binding-posts.

21 represents the key.

The plates 5 and 6 are secured together by the lugs 22, which pass through the longitudinal slots 23 of the said clamping-plates, thus serving as guides insuring a longitudinal movement of the clamping-plates.

This device is very simple, efiicient, and convenient. The casing may be bound with a suitable book covering, so that no metal parts will be exposed and the device will present a compact and neat appearance, desirable with this class of binders.

This powerful clamp-lock is effected by a very slight turn of the key and can be utilized at any vertical position of the top cover relative to the binding-posts.

Having described my invention, I claim-- In combination with the bottom cover and binding-posts of a temporary binder, a top cover having a casing, clamping-plates longiner ends of the plates and move them apart tudinally movable in said casing and having hooked arms projected from the opposite sides of their inner ends, the said binding-posts passing through said casing and passing loosely through said plates, a swivel in the casing between the inner ends of the said plates, having peripheral shoulders adapted to engage said hooked arms to draw the plates together in one direction of swivel rotation, and having peripheral cams adapted to engage the in- When the swivel is turned in the opposite direction for clamping the plates on the bindingpost, and a key device for operating said swivel, substantially as described.

In testimony whereof I have hereunto set my hand.

WVALTER MENDENHALL. Witnesses: OLIVER B. KAIsER, LEO ODoNNnLL. 

